Improvement in the manufacture of sections of iron columns



. w. COOKE & L.- DPYORK.

MANUFACTURE OF QECTIONS OF IRON COLUMNS. No 130,005. Rammed J-u1y18,1876.

2 Shee-ts-She=et 1;

' WPC'OOKE & L. n. YORK.

MANU No. 180,005.

UNITED STATES,

PATENT OrrroE.

WATTS OOOKE AND LEVI D. YORK, 0F PATERSON, NEW JERSEY.

Specification forming part of Letters Patent No. 180 005, dated July 18, 1876; application filed IMPROVEMENT IN THE MANUFACTURE OF SECTIONS OF IRON COLUMNS.

June 9, 1 576.

To all whom it may concern:

Be it known that we, WATTS OOOKE and LEVI D. YORK, of Paterson, Passaic county, in the State of New Jersey, have invented certain new and useful Improvements relating to the Method of Producing Sections of Iron Columns, of which the following is a specification:

We have applied the invention to the pro- 'duction of iron bars for sections of wroughtiron columns. The forms of the bars are like those described in the patent to G. Halstead, [Cornelh] June 8, 1869, No. 91,125, except that there are three (3) iron ribs on each "sec tion, instead of one, (1,) as set forth in that patent. I

To produce the shape we first pile the iron in a peculiar manner. We next roll the bar to exactly the required shape, except that the body of the shape is flat, instead of being, as is finally required, curved in its transverse section, like the body of an ordinary metallic pen. We then impart the final curvature to it by rolls, which are so grooved that they do not disturb or in anywise modify the shape of the ridges, but only bend the body into the required curved conditionthat is to say, we produce in the final rolls grooves which receive the outer ridges or ribs without coustraining them, and allow them to change their inclination relatively to the central ridge point except in the curvature, which curvature is to be afterward impressed.

Fig. 3 is a view of the rolls in the act of curving the shape; and Fig. 4 is aview of the shape and of the adjacent portion of the rolls as it passes through in the act of being curved, (shown on a larger sca e.)

Similar letters of reference indicate like parts in all the figures.

The iron being treated will be designated by the marks M IVP, 866., to--iiulicate the different parts. B B B represent a set of the first rolls, of which there may be several'sets, inducing the desired shape in a flat bar by a succession of rollin'gs. D D Dare a set of the bending-rollers, of which there may be succession of sets, inducing the desired curvature. by degrees. The outermost grooves, (1 and (1 in the concave rolls are much wider than the thickness of the corresponding ridge in the bar, and allow the ridge to change its inclination as the body is bent.

In case there are several sets of these rolls corresponding to B and D, the last set or sets may have the grooves so formed as to touch the inner side of each outer ridge on the iron but none of the rolls of this bending set touch the outer side of the outer ridges.

The rolls D D effect their end by practically working on the body M, and not on either of the ribs or ridges. The'ridges M and M near the edges of the section, are left free to be governed in their inclination entirely by the bending of the body M. The rolls D, which effect the transverse bending, act on the body and leave the ridges free. Each ridge completed stands in a position which is radial to the finished column, and it assumes this position by being left free during the bending process.

In commencing to make one of the shapes or sections M M M M we prepare the iron in accordance with the ordinary practice, by

' previously rolling it into bars of substantially rectangular section, andcutting off those bars in short lengths and piling a number of them together for reheating. In so piling, we introduce the iron for each of the ridges M M M by putting wide and relatively thin bars (correspondingly marked in Fig. l) edgewise in the. pile, and allow the upper edge to exbars M M M to project above the main body of the pile.

This mode 06 )llll] convenient] and effectively holds the material for the ridges in position, and we find that it insures a very perfect connection between the several ridges and the main body. The cinder can escape freely through the radial joint, and the Weld is practically perfect. Our subsequent treatment in the bending is intended to avoid throwing any strain on any of the ridges; but when, in consequence of imperfect workmanship, or any irregular wear of the rolls, even a severe strain shall be thrown on a ridge, this mode of piling does much to insure against any injurious etl'ect therefrom.

Modifications may be made in some of the details without defeating the object of the invention. Thus, instead of three-high rolls, either for the fiat rolling parts B B B, or for the curving parts D l) D, single pairs of rolls may be used. We believe it possible to attain the result, if necessary, in any case by a succession of hammers or swa-ges variously operated but in all cases We esteem it important to first pile the iron with the ridges M M M with the lower bars on between them and alongside thereof, and to finally curve the iron by acting upon the body, and leave the outer ridges M M practically untouchedcr free.

We claim as our invention The method herein described of forming sectionsot' iron columns-namely, forming a pile, in the manner substantially as shown, welding said pile by rolling to thus produce a plate with two or more longitudinal ribs, and then passing said plate between the bendingrolls, as described, to impart to it the proper transverse curvature.

In testimony whereof we have hereunto set our hands this 1st day of June, 1876, in the presence of two subscribing witnesses.

WATTS OOOKE. LEVI D. YORK.

Witnesses:

THEo. SoHooNMA ER, J. WESLEY BUCKLEY. 

